WO2018076974A1

WO2018076974A1 - Policy control method, apparatus and system

Info

Publication number: WO2018076974A1
Application number: PCT/CN2017/102806
Authority: WO
Inventors: 李东浪; 杨德才; 于彬
Original assignee: 华为技术有限公司
Priority date: 2016-10-31
Filing date: 2017-09-21
Publication date: 2018-05-03
Also published as: CN108011725B; CN108011725A; CN112702180A; CN112702180B

Abstract

Disclosed are a policy control method, apparatus and system. The method comprises: after establishing an IP-CAN session for a UE, when a PCRF entity allocates a quota fragment, if the quota fragment is a quota fragment of a pre-set type, the PCRF entity returning, to a PCEF entity, indication information for indicating that the quota fragment is a quota fragment of a pre-set type; and if the quota fragment is used up, after reporting a quota update message, during the period where a response message regarding the update message is not received, the PCEF entity refusing to let the UE continue to access a network. In this way, where the last quota fragment is used up and a charging rule needs to be switched, a PCC architecture can be prevented from performing charging according to an original rule during the period where a new rule is not received, so that the accuracy of charging can be improved.

Description

Strategy control method, device and system

The present application claims priority to Chinese Patent Application No. 201610977819.2, entitled "Policy Control Method, Apparatus and System" on October 31, 2016, the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a policy control method, apparatus, and system.

Background technique

In the 3rd Generation Partnership Project (3GPP) system, the Policy and Charging Control (PCC) architecture can be adapted to various Internet Protocol (IP) connection access. The internet. Among them, the PCC architecture can perform policy control and charging control based on user usage.

In the policy control process, after receiving the session establishment request of the Policy and Charging Enforcement Function (PCEF) entity, the Policy and Charging Rule Function (PCRF) entity may The subscription information of the user equipment (User Equipment, UE) is sent to the PCEF entity to issue the quota fragmentation and the PCC rule. When the quota in the quota fragment is exhausted, the PCEF entity reports the result to the PCRF entity, and the PCRF entity performs the quota deduction. The quota fragmentation and PCC rules will be reissued. The UE may continue to use the network before the PCEF entity receives the new rule and the quota fragment. In practice, it has been found that this type of policy control may cause billing bias in the event that the last quota is exhausted.

Summary of the invention

The embodiment of the invention discloses a policy control method, device and system, which can improve the charging accuracy of the PCC architecture.

A first aspect of the embodiments of the present invention discloses a policy control method, where the method may include:

After establishing an IP-Connected Access Network (CAN) session for the UE, the PCEF entity performs quota monitoring on the UE access network based on the received first PCC rule and the first quota fragment, in the first quota fragmentation. If the remaining quota is less than or equal to the preset quota threshold, the update message is sent to the PCRF entity, and the first quota fragment is determined to be a preset type of quota fragment. In the case of a slice and no response message to the update message, the PCEF entity may deny the UE access to the network.

The update message is used to indicate that the remaining quota of the first quota fragment is less than or equal to a preset quota threshold. The preset type of quota fragmentation may be the last quota fragment of the UE, but if the network currently accessed by the UE can provide a faster download speed, such as a high-speed network such as Long Term Evolution (LTE), and each quota The size of the fragment is relatively small. The preset type of quota fragment can also be the second last or the third last quota fragment, so that the update message sent by the PCEF has sufficient response time.

It should be noted that when the UE starts the data traffic function, the UE sends an IP-CAN session establishment request message to the PCEF entity, and the PCEF entity sends a credit control request to the PCRF entity based on the session establishment request message (Credit). Control Request, CCR) Initial message. The PCRF searches for the subscription information of the UE based on the user identifier of the UE included in the CCR initial message, and generates a QoS rule according to the subscription information, and allocates the first quota fragment, the first PCC rule (including the QoS rule), and the trigger. The initial message is returned to the PCEF entity through a Credit Control Answer (CCA). After receiving the information returned by the PCRF entity, the PCEF entity installs the first PCC rule according to the information, and returns an IP-CAN session establishment response message to the UE, thereby completing the establishment of the IP-CAN session.

As a possible implementation, the first PCC rule and the first quota fragment are generated by the PCRF entity based on the UE subscription information and sent to the PCEF entity through the usage monitoring information of the Gx interface; wherein the PCEF entity determines the first quota fragment Whether the default type of quota fragmentation is specific can be:

Determine whether the indication information exists in the usage monitoring information. If yes, determine that the first quota fragment is a preset type of quota fragment. The indication information is used to indicate that the first quota fragment is the last quota fragment of the UE.

As another feasible implementation manner, the method may further include:

The PCEF entity allows the UE to access the network if the first quota fragment is not a preset type of quota fragment and the response message of the update message is not received.

As another feasible implementation manner, the method may further include:

When receiving the response message of the update message, the PCEF entity may perform quota monitoring on the UE access network according to the second PCC rule and the second quota fragment. The response message of the update message includes the second PCC rule and the second quota fragment generated by the PCRF entity based on the UE subscription information and the first quota fragment.

Correspondingly, the second aspect of the embodiment of the present invention discloses a PCEF entity, which may include a monitoring module, a transceiver module, a judging module, and a control module. The module may be used to execute the policy control method disclosed in the first aspect.

Correspondingly, a third aspect of the embodiments of the present invention discloses another PCEF entity, which may include a memory, a transceiver, and a processor, where the memory is used to store a set of program codes, and the transceiver and the processor are used to call a program stored in the memory. The code performs the policy control method disclosed in the first aspect.

Correspondingly, the fourth aspect of the embodiments of the present invention discloses another policy control method, where the method may include:

After receiving the CCR initial message sent by the PCEF entity, the PCRF may generate a first PCC rule and a first quota fragment based on the subscription information of the UE, and determine whether the first quota fragment is a preset type of quota. Fragmentation, if yes, generating indication information indicating that the first quota fragment is a preset type of quota fragment, and then returning a CCA initial message to the PCEF entity.

The CCR initial message is used to request to establish an IP-CAN session for the UE. The CCA initial message includes a first PCC rule, a first quota fragment, and indication information.

As a possible implementation, the preset type of the quota fragment may be the last quota fragment of the UE, or may be the second last or the third last quota fragment, which is not limited by the present invention.

As another feasible implementation manner, the specific manner in which the PCRF entity returns the CCA initial message to the PCEF entity may be:

The CCA initial message is returned to the PCEF entity by using the monitoring information in the Gx interface, so that the PCEF entity performs quota monitoring on the UE access network based on the first PCC rule and the first quota fragment. If the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, the PCEF entity sends an update message to the PCRF entity to indicate that the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, and has not received yet In the case of the response message of the update message, the PCEF entity denies the UE access to the network.

Correspondingly, a fifth aspect of the embodiments of the present invention discloses a PCRF entity, which may include a transceiver module, a generation module, and The judging module, the above module may be used to execute the policy control method disclosed in the fourth aspect.

Correspondingly, a sixth aspect of the embodiments of the present invention discloses another PCRF entity, which may include a memory, a transceiver, and a processor, where the memory is used to store a set of program codes, and the transceiver and the processor are used to call a program stored in the memory. The code performs the policy control method disclosed in the fourth aspect.

Correspondingly, a seventh aspect of the embodiments of the present invention discloses a policy control system, which may include the PCEF entity disclosed in the second aspect and the PCRF entity disclosed in the fourth aspect, for performing the disclosed policy control method.

Embodiments of the present invention have the following beneficial effects:

In the embodiment of the present invention, after the IP-CAN session is established for the UE, the PCRF entity allocates the quota fragment, and if the quota fragment is a preset type of quota fragment, the PCRF entity will indicate that the quota fragment is pre- The indication information of the type quota fragment is returned to the PCEF entity. If the quota fragment is exhausted, the PCEF entity will refuse the UE to continue to access the network after the update message of the quota is reported and the response message of the update message has not been received. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic diagram of a PCC architecture applied to an embodiment of the present invention;

2 is a schematic structural diagram of a PCEF entity according to an embodiment of the present invention;

3 is a schematic structural diagram of a PCRF entity according to an embodiment of the present invention;

4 is a schematic flowchart of a policy control method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another PCEF entity according to an embodiment of the present disclosure;

6 is a schematic structural diagram of another PCRF entity disclosed in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a policy control system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The embodiment of the invention discloses a policy control method, device and system, which can refuse the UE to access the network if the preset type of quota fragment is exhausted and does not receive the new rule, thereby improving the charging precision of the PCC architecture. degree. The details are described below.

In order to facilitate the understanding of the technical solutions disclosed in the embodiments of the present invention, the PCC architecture to which the present invention is applied is first briefly introduced.

Please refer to FIG. 1 , which is a schematic diagram of a PCC architecture applied according to an embodiment of the present invention. The PCC architecture shown in Figure 1 is a standard PCC charging and Quality of Service (QoS) control architecture defined by the 3GPP standards organization, including PCRF entity, PCEF entity, Application Function (AF) entity, Traffic Detection Function (TDF) entity, Online Charging System (OCS), Offline Charging System (OFCS) ), Bearing Binding and Event Report Function (BBERF) entity and User Profile Repository (SPR).

The PCRF entity includes policy control decisions and flow-based charging control functions. The PCRF entity accepts input from PCEF entities, SPRs, and AF entities, and provides PCEF entities with service data flow detection, gating, QoS-based, and flow-based accounting. The network control function (in addition to credit control) can also make PCC decisions based on the custom information of the PCRF entity.

The PCEF entity is located at the gateway, such as the General Packet Radio Service (GPRS) Gateway GPRS Support Node (GGSN) gateway, and the Evolved Packet Core (EPC) public data network ( Public Data Network, PDN) PDN Gateway (PGW), etc. The PCEF entity provides service data flow detection, user plane service processing, trigger control plane session management (requires IP-(Connectivity Access Network (CAN) permission), QoS processing and service data flow measurement, as well as online charging and offline Billing interaction. The PCEF entity interacts with the PCRF entity through the Gx interface.

The AF entity is an application service unit that provides dynamic policy/billing control for IP-CAN user plane behavior. These services require dynamic policy and charging control. The AF entity transmits the dynamic session information required by the PCRF entity through the Rx interface, and receives the specific information of the IP-CAN and the acknowledgement of the IP-CAN bearer layer event.

The TDF entity is used to perform application detection, report detection of the application and its service data traffic description to the PCRF entity. If the TDF entity does not detect this information, the TDF entity performs gating, redirection, and bandwidth throttling. If the application information can be detected, the PCRF entity generation decision is submitted through the Sd interface to the PCEF entity for execution control.

OCS provides credit control functions based on user and service data flow. It is mainly composed of online collection, billing control, rating, balance management and other modules. It implements online charging function and cooperates with other charging network element devices (trigger based session). The online charging event request device of the event performs real-time traffic control. The OCS interacts with the PCRF entity through the Sy interface and interacts with the PCEF entity through the Gy interface.

OFCS is a post-paid processing system for bills and accounts. It provides billing functions based on user and service data streams, including customer service, service management, billing, settlement, accounting processing, and system management. The OFCS interacts with the PCEF entity through the Gz interface.

The BBERF entity is a bearer binding, an uplink bearer binding check, and a policy enforcement point for event reporting to the PCRF entity when the Gxx interface exists. It is located in the gateway, such as a Serving Gateway (SGW) that implements 3GPP access using Proxy Mobile IP (PMIP) based on the S5/S8 interface, and High Rate Packet Data (HRPD). Service Gateway (HSPD Gateway, HSGW), Access Gateway (AGW) in non-3G access occasions.

The SPR contains information related to all contracted users or subscriptions. The subscription information provided by the SPR includes (for each PDN): the services allowed by the contracted users; the priority of each allowed service (optional); the QoS information allowed by the subscribed users. The billing related information of the subscriber service, such as the access type, location information, and number of uses; the type of the subscriber. SPR may be associated with multiple databases distributed across the carrier's network. The SPR and PCRF entities interact through the Sp interface.

In the PCC architecture shown in FIG. 1, policy control and charging control based on user usage can be implemented.

A PCEF entity disclosed in the embodiment of the present invention is based on the system architecture shown in FIG. Referring to FIG. 2, FIG. 2 is a schematic structural diagram of a PCEF entity disclosed in an embodiment of the present invention. As shown in FIG. 2, the PCEF entity may include at least one processor 201, such as a CPU, a transceiver 202, a memory 203, and at least one communication bus 204. The processor 201, the transceiver 202, and the memory 203 are connected by a bus 204.

The memory 203 may be a high speed RAM memory or a non-volatile memory such as a disk memory. Optionally, it may also be at least one storage device located in the processor. The above-mentioned memory 203 is used for storing a set of program codes, and the processor 201 and the transceiver 202 are used to call the program code stored in the memory 203, and perform the following operations:

The processor 201 is configured to perform quota monitoring on the UE access network based on the received first PCC rule and the first quota fragment after establishing an IP-CAN session for the UE.

The transceiver 202 is configured to send, to the PCRF entity, an update message, where the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, where the update message is used to indicate that the remaining quota of the first quota fragment is less than or equal to the pre- Set the quota threshold.

The processor 201 is further configured to determine whether the first quota fragment is a preset type of quota fragment.

The transceiver 202 is further configured to receive a response message of the update message.

The processor 201 is further configured to: when the first quota fragment is a preset type of quota fragment, and the transceiver does not receive the response message of the update message, reject the UE from accessing the network.

In the embodiment of the present invention, when the UE starts the data traffic function, the UE sends an IP-CAN session establishment request message to the PCEF entity, and the transceiver 202 sends a credit control request to the PCRF entity based on the session establishment request message (Credit Control Request). , CCR) initial message. The PCRF searches for the subscription information of the UE based on the user identifier of the UE included in the CCR initial message, and generates a QoS rule according to the subscription information, and allocates the first quota fragment, the first PCC rule (including the QoS rule), and the trigger. The initial message is returned to the PCEF entity through a Credit Control Answer (CCA). After the transceiver 202 receives the information returned by the PCRF entity, the processor 202 installs the first PCC rule according to the information, and the transceiver 202 returns an IP-CAN session establishment response message to the UE, thereby completing the establishment of the IP-CAN session. .

The preset type of the quota fragment may be the last quota fragment of the UE, but if the network currently accessed by the UE can provide a faster download speed, such as a high-speed network such as LTE, and the capacity of each quota fragment is relatively small. Then, the preset type of quota fragmentation can also be the second last or the third last quota fragment, so that the update message sent by the PCEF has sufficient response time. The remaining quota of the first quota fragment refers to the remaining quota in the first quota fragment except for the quota consumed by the UE to access the network.

Optionally, the first PCC rule and the first quota fragment are generated by the PCRF entity based on the UE subscription information and sent to the PCEF entity by using the usage monitoring information of the Gx interface. The processor 201 determines whether the first quota fragment is a pre- The specific way to set the type of quota fragmentation can be:

In the embodiment of the present invention, if the first quota fragment allocated by the PCRF entity is the last quota fragment of the UE, the PCRF entity returns the first PCC rule and the first quota fragment, and is used to indicate the first quota. The fragmentation is sent to the PCEF entity for the indication of the last quota fragment. The information may be sent by the PCRF entity to the PCEF entity through the usage monitoring information of the Gx interface. Therefore, after the first quota fragment is exhausted, the processor 201 determines whether there is such indication information in the usage monitoring information, and if yes, the first quota fragment is a preset type of quota fragment, thereby The UE is prohibited from accessing the network while the transceiver 202 has not received the response message of the update message.

Optionally, the processor 201 is further configured to allow the UE to access the network if the first quota fragment is not a preset type of quota fragment, and the transceiver 202 does not receive the response message of the update message.

Optionally, the response message of the update message includes a second PCC rule and a second quota fragment generated by the PCRF entity based on the subscription information and the first quota fragment. The processor 201 is further configured to perform quota monitoring on the UE access network according to the second PCC rule and the second quota fragment if the transceiver 202 receives the response message of the update message.

It can be seen that, in the PCEF entity described in FIG. 2, after establishing an IP-CAN session for the UE, the PCEF entity performs quota monitoring on the UE access network based on the quota fragment and the PCC rule allocated by the PCRF entity, if the quota fragmentation consumes After the update message of the quota is reported, and the response message of the update message has not been received, the PCEF entity will refuse the UE to continue to access the network. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

A PCRF entity disclosed in the embodiment of the present invention is based on the system architecture shown in FIG. Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a PCRF entity according to an embodiment of the present invention. As shown in FIG. 3, the PCRF entity may include at least one processor 301, such as a CPU, a transceiver 302, a memory 303, and at least one communication bus 304. The processor 301, the transceiver 302, and the memory 303 are connected by a bus 304.

The memory 303 may be a high speed RAM memory or a non-volatile memory such as a disk memory. Optionally, it may also be at least one storage device located in the processor. The above-mentioned memory 203 is used for storing a set of program codes, and the processor 301 and the transceiver 302 are used to call the program code stored in the memory 303, and perform the following operations:

The transceiver 302 is configured to receive a CCR initial message sent by the PCEF entity, where the CCR initial message is used to request to establish an IP-CAN session for the UE.

The processor 301 is configured to generate, according to the CCR initial message, the first PCC rule and the first quota fragment according to the subscription information of the UE, and determine whether the first quota fragment is a preset type of quota fragment, and if yes, generate The indication information used to indicate that the first quota fragment is a preset type of quota fragment.

The transceiver 302 is further configured to return a CCA initial message to the PCEF entity, where the CCA initial message includes a first PCC rule, a first quota fragment, and indication information.

In the embodiment of the present invention, when the UE starts the data traffic function, the UE sends an IP-CAN session establishment request message to the PCEF entity, and the PCEF entity sends a CCR initial message to the PCRF entity based on the session establishment request message, requesting to establish an IP address. -CAN session.

Optionally, the preset type of quota fragment may be the last quota fragment of the UE, but if the network currently accessed by the UE can provide a faster download speed, such as a high-speed network such as LTE, and the capacity of each quota fragment. If the size is smaller, the preset type of quota fragmentation can also be the second-to-last or third-order quota fragment, so that the update message sent by the PCEF has sufficient response time. The remaining quota of the first quota fragment refers to the remaining quota in the first quota fragment except for the quota consumed by the UE to access the network.

Optionally, the specific manner in which the transceiver 302 returns the CCA initial message to the PCEF entity may be:

The CCA initial message is returned to the PCEF entity by using the monitoring information in the Gx interface, so that the PCEF entity performs quota monitoring on the UE access network based on the first PCC rule and the first quota fragment. If the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, the PCEF entity sends a remaining quota indicating that the first quota fragment is less than or equal to the PCRF entity. The update message of the preset quota threshold, in the case that the response message of the update message has not been received, the PCEF entity denies the UE access to the network.

Further, if the first quota fragment is not the last quota fragment of the UE, if the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, the PCEF entity sends the PCRF entity to indicate the first quota fragmentation. The update quota of the remaining quota is less than or equal to the preset quota threshold. In the case that the response message of the update message has not been received, the PCEF entity allows the UE to access the network.

It can be seen that, in the PCRF entity described in FIG. 3, after the IP-CAN session is established for the UE, the PCRF entity allocates the quota fragment, and if the quota fragment is a preset type of quota fragment, the PCRF entity will indicate The quota fragment is returned to the PCEF entity for the indication information of the preset type of quota fragment. If the quota fragment is exhausted, the PCEF entity will refuse the UE to continue to access the network after the update message of the quota is reported and the response message of the update message has not been received. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

A policy control method disclosed in the embodiment of the present invention is based on the system architecture shown in FIG. Please refer to FIG. 4. FIG. 4 is a schematic flowchart diagram of a policy control method according to an embodiment of the present invention. As shown in FIG. 4, the method may include the following steps:

401. The UE sends an IP-CAN session establishment request message to the PCEF entity.

In the embodiment of the present invention, when the UE starts the data traffic function, the UE sends an IP-CAN session establishment request message to the PCEF entity, where the IP-CAN session establishment request message carries an Access Point Name (APN). The identity of the Public Land Mobile Network (PLMN) and the user identity of the UE. The user identifier may include a Mobile Station International Integrated Services Digital Network Number (MSISDN), an International Mobile Subscriber Identification Number (IMSI), and an International Mobile Equipment Identity (International Mobile Equipment Identity). , IMEI) and so on.

The IP-CAN session establishment request message may be a general data transfer platform (GTP) message, or may be a non-3G network-related trigger message, which is not limited in the embodiment of the present invention.

402. The PCEF entity receives the IP-CAN session establishment request message, and sends a CCR initial message to the PCRF entity.

In the embodiment of the present invention, after receiving the IP-CAN session establishment request message of the UE, the PCEF entity allocates an IP address to the UE based on the user identifier and the APN of the UE, and sends a CCR-Init ial message to the PCRF entity through the Gx interface. Specifically, the PCEF entity requests to establish an IP-CAN session through a CCR type Attribute Value Pairs (AVP).

Further, the CCR-Initial message carries the user identifier, IP address, Access Point Name (APN), and identifier of the PLMN of the UE.

403. The PCRF entity receives the CCR initial message, and searches for the subscription information of the UE based on the user identifier in the CCR initial message.

In the embodiment of the present invention, after receiving the CCR-Initial message, the PCRF entity first searches for the subscription information of the UE based on the user identifier of the UE, and the subscription information of the UE may be stored in the PCRF entity, or may be stored in the SPR. The embodiments of the invention are not limited. The subscription information includes the subscription service data of the UE, such as the online package information purchased by the user, such as the total traffic or the total duration of the Internet access, and the types of services that can be used. In the embodiment of the present invention, the flow rate or duration may be Collectively referred to as quotas.

404. The PCRF entity generates a first PCC rule and a first quota fragment based on the subscription information.

In the embodiment of the present invention, in the process of accessing the network, the PCRF entity obtains the corresponding quota allocation policy according to the total quota of the UE subscription, that is, allocates the total quota to the PCEF entity according to one quota segment, and each After the quota fragment is exhausted, another quota fragment is divided, that is, the control of the UE accessing the network is implemented according to this manner.

Therefore, after finding the subscription information of the UE, the PCRF entity may generate a service rule list according to the service data in the subscription information, such as the first PCC rule, and search for the quota allocation policy corresponding to the total quota, and configure the first quota based on the quota allocation policy. Fragmentation. The PCC rule is used to indicate which operations of the UE access the network are allowed and which are not. The PCC rule also includes a QoS rule, which is used to indicate the bandwidth of the UE accessing the network, and provides bandwidth guarantee for the UE to access the network.

Further, the PCRF entity also determines information about the trigger.

405. The PCRF entity determines whether the first quota fragment is a preset type of quota fragment, and if yes, generates indication information.

In the embodiment of the present invention, when the first quota fragment is generated, the PCRF entity determines whether the first quota fragment is a preset type of quota fragment. The preset type of the quota fragment may be the last quota fragment specified by the PCRF entity, or may be the second last or the third last quota fragment, which is not limited in the embodiment of the present invention.

For example, if the UE currently accesses a high-speed network such as the network LTE and the UE accesses the network to play video online, the quota consumed by the UE is faster, such as 3M per second, if the quota fragment allocated to the UE is a reciprocal. The second quota is fragmented, and the capacity of each quota fragment is relatively small, such as 1M. Then, when the current quota fragment is used up, the PCEF reports the update message, and the response message of the update message has not been received, it is assumed that The response time required during the period is 1 second, and during this period, the UE is allowed to continue to access the network, which may result in the quota consumed in the 1 second period exceeding the capacity of the last quota fragment, which may also result in billing. deviation. Therefore, in order to avoid the occurrence of such a situation, the accuracy of the charging is further improved. When the network currently accessed by the UE can provide a faster downloading speed, and the capacity of each quota fragment is relatively small, the preset type of quota is used. The fragmentation can also be the second-to-last or third-order quota fragment, or even the fourth-order quota fragment, so that the update message sent by the PCEF has sufficient response time.

In the embodiment of the present invention, the specific manner in which the PCRF entity determines whether the first quota fragment is the last quota fragment may be: after the PCRF entity determines to subtract the quota of the first quota fragment from the remaining quota of the UE, The remaining quota, if any, indicates that the first quota fragment is not the last quota fragment. If not, the first quota fragment is the last quota fragment of the UE.

Therefore, if the PCRF entity determines that the first quota fragment is a preset type of quota fragment, the indication information is further generated, where the indication information is used to indicate that the first quota fragment is the last quota fragment of the UE. The indication information may be a special identifier of the first quota fragment.

It should be noted that steps 404 and 405 can be performed simultaneously without prioritization.

406. The PCRF entity returns a CCA initial message to the PCEF entity.

In the embodiment of the present invention, after generating the first PCC rule and the first quota fragment, the PCRF entity returns a CCA-Initial message to the PCEF entity. The CCA-Initial message includes a first quota fragment, a first PCC rule, a trigger, and the like. If the PCRF entity determines that the first quota fragment is a preset type of quota fragment, the CCA-Initial message further includes indication information indicating that the first quota fragment is a preset type of quota fragment. If the first quota fragment is not a preset type of quota fragment, the indication information is not included in the CCA-Initial message.

Specifically, the PCRF entity returns a CCA-Initial message through the Usage Monitoring Information (AVP) of the Gx interface.

In the embodiment of the present invention, when the quota fragment is configured, the quota fragment is a preset type of quota fragment (for example, the last quota fragment is used as an example), and the AVP description is added. The following is a description of adding an AVP to the Gx interface:

Usage-Monitoring-Information::=<AVP Header:1067>

[Monitoring-Key]

0,2[Granted-Service-Unit]

0,2[Used-Service-Unit]

[Usage-Monitoring-Level]

[Usage-Monitoring-Report]

[Usage-Monitoring-Support]

[Final-Unit-Indication]

*[AVP]

Final-Unit-Indication

Final-Unit-Indication AVP indicates the Granted-Service-Unit is the last quota slice,indicate PCEF after the Granted-Service-Unit is finished should block traffic until receive CCA-U message.

Further, if the quota fragment is not a preset type of quota fragment, the Usage Monitoring Information AVP of the Gx interface does not include the indication of [Final-Unit-Indication].

407. The PCEF entity receives the CCA initial message and returns an IP-CAN setup response message to the UE.

In the embodiment of the present invention, after receiving the CCA-Initial message returned by the PCRF entity, the PCEF entity may indicate that the UE has established an IP-CAN session. Then, after receiving the CCA-Initial message, the PCEF entity installs the first PCC rule and returns an IP-CAN Establish Response message to the UE to notify the UE that the UE can perform the network access operation.

408. The PCEF entity performs quota monitoring on the UE accessing the network based on the first PCC rule and the first quota fragment in the CCA initial message.

In the embodiment of the present invention, after installing the first PCC rule, the PCEF entity may control the UE accessing the network according to the first PCC rule, and perform quota monitoring on the UE access network based on the first quota fragment, that is, monitor the UE to access the network. Whether the quota consumed exceeds the quota of the first quota fragment.

409. The PCEF entity sends an update message to the PCRF entity if the remaining quota of the first quota fragment is less than or equal to the preset quota threshold.

In the embodiment of the present invention, the preset quota threshold may be set to 0, or may be set to a smaller value greater than 0, such as 10 kb. In the embodiment of the present invention, the preset quota threshold generally takes 0. When the PCEF entity detects that the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, if the first quota fragment is exhausted, the PCEF entity sends an update message to the PCRF entity. The remaining quota of the first quota fragment refers to the remaining quota in the first quota fragment except for the quota consumed by the UE to access the network.

The update message is specifically a CCR-Update message, and is specifically sent by using a CCR-Type AVP. The update message is used to report the quota, that is, the remaining quota of the first quota fragment is less than or equal to the preset quota threshold.

410. The PCEF entity determines, according to the indication information in the CCA initial message, whether the first quota fragment is a preset type of quota fragment. If yes, and does not receive the response message of the update message, the PCEF entity denies the UE from accessing the network.

In the embodiment of the present invention, if the first quota fragment is a preset type of quota fragment, the Usage Monitoring Information AVP of the Gx interface may also include the CCA-Initial message indicating that the first quota fragment is a preset type. The indication of the quota fragmentation; if not, the indication information will not be included.

Therefore, the specific manner of determining, by the PCEF entity, whether the first quota fragment is a preset type of quota fragment based on the indication information in the CCA initial message may be: determining whether the indication exists in the Usage Monitoring Information AVP (or CCA-Initial message) The information, if yes, determines that the first quota fragment is a preset type of quota fragment, and if not, determines that the quota fragment is not a preset type.

Further, after the PCEF entity reports the update message and determines that the first quota fragment is a preset type of quota fragment, the PCEF entity configures that the UE cannot continue to access the network, that is, denies the UE from accessing the network.

As a possible implementation manner, if the PCEF entity reports the update message and determines that the first quota fragment is not a preset type of quota fragment, the PCEF entity may allow the UE to continue to access the network.

It should be noted that steps 409 and 410 can be performed simultaneously without prioritization.

411. The PCRF entity receives the update message, performs quota deduction according to the first quota fragment, and updates the PCC rule based on the subscription information of the UE.

In the embodiment of the present invention, if the first quota fragment delivered by the PCRF entity is the last quota fragment of the UE, after the quota deduction is performed, the UE does not have a subscription quota, and if the UE continues to access the network, the UE needs to use the UE. Quotas are billed according to new rules and update control policies. Therefore, when the first quota fragment is the last quota, the PCRF entity updates the PCC rule based on the subscription information of the UE.

412. The PCRF entity returns a response message of the update message to the PCEF entity.

In the embodiment of the present invention, after updating the PCC rule, the PCRF entity returns a response message of the update message to the PCEF entity, where the response message carries the updated PCC rule.

413. The PCEF entity receives the response message of the update message, deletes the first PCC rule, and installs the updated PCC rule.

In the embodiment of the present invention, after receiving the response message of the update message, the PCEF entity deletes the original first PCC rule and installs the updated PCC rule, so as to control the UE access network according to the updated PCC rule.

Optionally, if the first quota fragment is not the last quota fragment of the UE, after the first quota fragment is exhausted, the PCRF entity performs the quota deduction according to the first quota fragment, and the UE is contracted according to the UE. The information generates a second PCC rule and a second quota fragment, and carries the second PCC rule and the second quota fragment in the response message that returns the update message. After receiving the response message of the update message, the PCEF entity deletes the first PCC rule, installs the second PCC rule, and performs quota monitoring on the UE access network based on the second PCC rule and the second quota fragment.

Similarly, when generating the second quota fragment, the PCRF entity still determines whether the second quota fragment is a quota fragment of the preset quota (such as the last quota fragment), and if so, the response of the returned update message. The message will carry the indication message, if not, it will not be carried. That is, the PCRF entity determines whether the quota fragment is a preset type of quota fragment when the quota fragment is allocated, and if yes, carries the indication information in the return response message. The PCEF entity also determines whether the fragment is a preset type of quota fragment when the quota fragment is exhausted. If yes, the UE is not allowed to continue to access the network during the period of reporting the update message but not receiving the response message. The specific implementation is the same as the steps 405 and 406, and details are not described herein again.

It can be seen that in the method described in FIG. 4, after establishing an IP-CAN session for the UE, the PCRF entity allocates quota fragments. If the quota fragment is a preset type of quota fragment, the PCRF entity returns the indication information indicating the quota fragment to the preset type of quota fragment to the PCEF entity. If the quota fragment is exhausted, the PCEF entity will refuse the UE to continue to access the network after the update message of the quota is reported and the response message of the update message has not been received. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

Another PCEF entity disclosed in the embodiment of the present invention is based on the system architecture shown in FIG. Please refer to FIG. 5. FIG. 5 is a schematic structural diagram of another PCEF entity according to an embodiment of the present invention. As shown in FIG. 5, the PCEF entity may include:

The monitoring module 501 is configured to perform quota monitoring on the UE access network based on the received first PCC rule and the first quota fragment after establishing an IP-CAN session for the UE.

The transceiver module 502 is configured to send, to the PCRF entity, an update message, where the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, where the update message is used to indicate that the remaining quota of the first quota fragment is less than or equal to the pre- Set the quota threshold.

The determining module 503 is configured to determine whether the first quota fragment is a preset type of quota fragment.

The transceiver module 502 is further configured to receive a response message of the update message.

The control module 504 is configured to: when the determining module 503 determines that the first quota fragment is a preset type of quota fragment, and the transceiver module 502 does not receive the response message of the update message, the UE is denied access to the network.

In the embodiment of the present invention, when the UE starts the data traffic function, the UE sends an IP-CAN session establishment request message to the PCEF entity, and the transceiver module 502 sends a CCR initial message to the PCRF entity based on the session establishment request message. The PCRF searches for the subscription information of the UE based on the user identifier of the UE included in the CCR initial message, and generates a QoS rule according to the subscription information, and allocates the first quota fragment, the first PCC rule (including the QoS rule), and the trigger. Return to the PCEF entity via the CCA initial message. After receiving the information returned by the PCRF entity, the PCEF entity installs the PCC rule according to the information, and the transceiver module 502 returns an IP-CAN session establishment response message to the UE, thereby completing the establishment of the IP-CAN session.

Optionally, the first PCC rule and the first quota fragment are generated by the PCRF entity based on the subscription information of the UE, and are sent to the PCEF entity by using the monitoring information of the Gx interface. The determining module 503 determines whether the first quota fragment is pre- The specific way to set the type of quota fragmentation can be:

In the embodiment of the present invention, if the first quota fragment allocated by the PCRF entity is the last quota fragment of the UE, the PCRF entity returns the first PCC rule and the first quota fragment, and is used to indicate the first quota. The fragmentation is sent to the PCEF entity for the indication of the last quota fragment. The information may be sent by the PCRF entity to the PCEF entity through the usage monitoring information of the Gx interface. Therefore, after the first quota fragment is exhausted, the determining module 503 determines whether there is such indication information in the usage monitoring information, and if yes, the first quota fragment is a preset type of quota fragment, and the control is performed. The module 504 thus prohibits the UE from accessing the network while the transceiver module 502 has not received the response message for the update message.

Optionally, the control module 504 is further configured to allow the UE to access the network if the first quota fragment is not a preset type of quota fragment, and the transceiver module 502 does not receive the response message of the update message.

Optionally, the response message of the update message includes a second PCC rule and a second quota fragment generated by the PCRF entity based on the subscription information and the first quota fragment. The monitoring module 501 is further configured to perform quota monitoring on the UE access network according to the second PCC rule and the second quota fragment if the transceiver module 502 receives the response message of the update message.

It can be seen that, in the PCEF entity described in FIG. 5, after establishing an IP-CAN session for the UE, the PCEF entity performs quota monitoring on the UE access network based on the quota fragment and the PCC rule allocated by the PCRF entity, if the quota fragmentation consumes After the update message of the quota is reported, and the response message of the update message has not been received, the PCEF entity will refuse the UE to continue to access the network. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

Another PCRF entity disclosed in the embodiment of the present invention is based on the system architecture shown in FIG. Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of another PCRF entity according to an embodiment of the present invention. As shown in FIG. 6, the PCRF entity may include:

The transceiver module 601 is configured to receive a CCR initial message sent by the PCEF entity, where the CCR initial message is used to request to establish an IP-CAN session for the UE.

The generating module 602 is configured to generate a first PCC rule and a first quota fragment based on the UE subscription information in response to the CCR initial message.

The determining module 603 is configured to determine whether the first quota fragment is a preset type of quota fragment.

The generating module 602 is further configured to: when the determining module 603 determines that the first quota fragment is a preset type of quota fragment, generate indication information for indicating that the first quota fragment is a preset type quota fragment.

The transceiver module 601 is further configured to return a CCA initial message to the PCEF entity, where the CCA initial message includes a first PCC rule, a first quota fragment, and indication information.

Optionally, the preset type of quota fragment may be the last quota fragment of the UE, but if the network currently accessed by the UE can provide a faster download speed, such as a high-speed network such as LTE, and the capacity of each quota fragment. If the size is smaller, the preset type of quota fragmentation can also be the second last or the third last quota fragment, so that the update message sent by the PCEF has sufficient response time.

Optionally, the specific manner in which the transceiver module 601 returns the CCA initial message to the PCEF entity may be:

Further, if the first quota fragment is not the last quota fragment of the UE, if the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, the PCEF entity sends the PCRF entity to indicate the first quota fragmentation. The update message with the remaining quota less than or equal to the preset quota threshold, in the case that the response message of the update message has not been received, the PCEF The entity allows the UE to access the network.

It can be seen that, in the PCRF entity described in FIG. 6, after the IP-CAN session is established for the UE, the PCRF entity allocates the quota fragment, and if the quota fragment is a preset type of quota fragment, the PCRF entity will indicate The quota fragment is returned to the PCEF entity for the indication information of the preset type of quota fragment. If the quota fragment is exhausted, the PCEF entity will refuse the UE to continue to access the network after the update message of the quota is reported and the response message of the update message has not been received. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

Based on the system architecture shown in FIG. 1, a policy control system disclosed in the embodiment of the present invention. Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of a policy control system according to an embodiment of the present invention. As shown in FIG. 7, the system can include a UE 701, a PCEF entity 702, and a PCRF entity 703, where:

When the UE 701 starts the data traffic function, the UE 701 sends an IP-CAN session establishment request message to the PCEF entity 702 requesting to establish an IP-CAN session, and the PCEF entity 702 sends the IP-CAN session establishment request message to the PCRF entity 703 based on the received IP-CAN session establishment request message. CCR initial message.

The PCRF entity 703 searches for the subscription information of the UE 701 by using the user identifier included in the CCR initial message, and generates a first PCC rule and a first quota fragment based on the subscription information, where the first quota fragment is pre- The type of the quota fragment (the last one, the second last or the third last quota fragment), the PCRF entity 703 generates the indication information indicating that the first quota fragment is a preset type of quota fragment (if not , no indication information will be generated). Therefore, the CCA initial message returned by the PCRF entity 703 to the PCEF entity 702 may include a first quota fragment, a first PCC rule, and indication information.

Therefore, after receiving the CCA initial message, the PCEF entity 702 returns an IP-CAN setup response message to the UE 701, and performs quota monitoring on the UE 701 access network based on the first PCC rule and the first quota fragment. If the remaining quota of the first quota fragment is less than or equal to the preset quota threshold (the first quota fragment is exhausted), the PCEF entity 702 sends an update message to the PCRF entity 703, and determines whether the indication information exists. If yes, it indicates that the first quota fragment is a preset type of quota fragment, and the PCEF entity 702 may not allow the UE 701 to access the network during the period when the response message of the update message returned by the PCRF entity 703 is not received.

Of course, if the first quota fragment is not a preset type of quota fragmentation, the PCEF entity 702 may allow the UE 701 to access the network during the period of not receiving the response message of the update message returned by the PCRF entity 703.

It can be seen that, in the policy control system described in FIG. 7, after the IP-CAN session is established for the UE, the PCRF entity allocates the quota fragment, and if the quota fragment is a preset type of quota fragment, the PCRF entity will The indication information indicating that the quota fragment is a preset type of quota fragment is returned to the PCEF entity. If the quota fragment is exhausted, the PCEF entity will refuse the UE to continue to access the network after the update message of the quota is reported and the response message of the update message has not been received. In this way, in the case that the last quota fragment is exhausted and the charging rule needs to be switched, the PCC architecture is prevented from performing charging according to the original rule during the period when the new rule is not received, thereby improving the accuracy of the charging.

It should be noted that, in the above embodiments, the descriptions of the various embodiments are different, and the parts that are not described in detail in a certain embodiment may be referred to the related descriptions of other embodiments. In addition, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

The steps in the method of the embodiment of the present invention may be sequentially adjusted, merged, and deleted according to actual needs.

The PCEF entity and the modules in the PCRF entity may be merged, divided, and deleted according to actual needs. Less.

The PCEF entity and the PCRF entity in the embodiment of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit) or an ASIC (Application Specific Integrated Circuit).

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The foregoing is a detailed description of a method, a device and a system for controlling a policy disclosed in the embodiments of the present invention. The principles and embodiments of the present invention are described in the specific examples. The description of the above embodiments is only for helping to understand the present invention. And the core idea of the present invention; at the same time, those skilled in the art, according to the idea of the present invention, there will be changes in the specific embodiments and application scope. In summary, the content of the present specification should not be construed as the present invention. limits.

Claims

A policy control method is applied to the policy and charging control PCC architecture. The PCC architecture includes a policy and charging rule control function PCRF entity and a policy and charging execution function PCEF entity, and the method includes:

After establishing an Internet Protocol IP-Connected Access Network CAN session for the user equipment UE, the PCEF entity performs quota monitoring on the UE access network based on the received first PCC rule and the first quota fragment;

The PCEF entity sends an update message to the PCRF entity, where the remaining quota of the first quota fragment is less than or equal to a preset quota threshold, where the update message is used to indicate that the first quota fragment is The remaining quota is less than or equal to the preset quota threshold;

Determining, by the PCEF entity, whether the first quota fragment is a preset type of quota fragment;

The PCEF entity denies the UE from accessing the network if the first quota fragment is the preset type of quota fragment and the response message of the update message is not received.
The method according to claim 1, wherein the first PCC rule and the first quota fragment are generated by the PCRF entity based on the subscription information of the UE and sent to the usage monitoring information of the Gx interface. The PCEF entity: the PCEF entity determines whether the first quota fragment is a preset type of quota fragment, and includes:

The PCEF entity determines whether the indication information exists in the usage monitoring information, where the indication information is used to indicate that the first quota fragment is the last quota fragment of the UE;

In the case that the indication information exists in the usage monitoring information, the PCEF entity determines that the first quota fragment is a preset type of quota fragment.
The method according to claim 1 or 2, wherein the method further comprises:

And in a case that the first quota fragment is not the quota type of the preset type, and the response message of the update message is not received, the PCEF entity allows the UE to access the network.
The method of claim 3, wherein the method further comprises:

Receiving, by the PCEF entity, a response message of the update message, where the response message of the update message includes a second PCC rule and a second quota fragment generated by the PCRF entity based on the subscription information and the first quota fragment ;

The PCEF entity performs quota monitoring on the UE access network according to the second PCC rule and the second quota fragment.
A policy control method is applied to a PCC architecture, where the PCC architecture includes a PCRF entity and a PCEF entity, and includes:

Receiving, by the PCRF entity, a credit control request CCR initial message sent by the PCEF entity, where the CCR initial message is used to request to establish an IP-CAN session for the UE;

The PCRF entity, in response to the CCR initial message, generates a first PCC rule and a first quota fragment based on the subscription information of the UE, and determines whether the first quota fragment is a preset type of quota fragment;

In the case that the first quota fragment is the quota type of the preset type, the PCRF entity generates indication information, where the indication information is used to indicate that the first quota fragment is the preset type. Quota fragmentation;

The PCRF entity returns a credit control response CCA initial message to the PCEF entity, where the CCA initial message includes the first PCC rule, the first quota fragment, and indication information.
The method according to claim 5, wherein the preset type of quota fragment is the last quota fragment of the UE.
The method according to claim 5 or 6, wherein the PCRF entity returns a CCA initial message to the PCEF entity, including:

The PCRF entity returns a CCA initial message to the PCEF entity by using the monitoring information in the Gx interface, so that the PCEF entity monitors the first quota point based on the first PCC rule and the first quota fragment The remaining quota of the slice is less than or equal to the preset quota threshold, and the update message is sent to the PCRF entity to indicate that the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, and the In the case of a response message to update a message, the UE is denied access to the network.
A PCEF entity, applied to a PCC architecture, comprising:

a monitoring module, configured to perform quota monitoring on the UE access network based on the received first PCC rule and the first quota fragment after establishing an IP-CAN session for the UE;

The sending and receiving module is configured to send, to the PCRF entity, an update message, where the remaining quota of the first quota fragment is less than or equal to a preset quota threshold, where the update message is used to indicate the remaining of the first quota fragment The quota is less than or equal to the preset quota threshold;

a determining module, configured to determine whether the first quota fragment is a preset type of quota fragment;

The transceiver module is further configured to receive a response message of the update message;

a control module, configured to: when the determining module determines that the first quota fragment is the quota type of the preset type, and the transceiver module does not receive the response message of the update message, rejecting The UE accesses the network.
The PCEF entity according to claim 8, wherein the first PCC rule and the first quota fragment are generated by the PCRF entity based on subscription information of the UE and sent through usage monitoring information of a Gx interface. The specific manner of the determining, by the determining module, whether the first quota fragment is a preset type of quota fragment is:

Determining whether the indication information exists in the usage monitoring information, where the indication information is used to indicate that the first quota fragment is the last quota fragment of the UE;

In the case that the indication information exists in the usage monitoring information, the first quota fragment is determined to be a preset type of quota fragment.
A PCEF entity according to claim 8 or 9, characterized in that

The control module is further configured to: when the determining module determines that the first quota fragment is not the quota type of the preset type, and the transceiver module does not receive the response message of the update message In this case, the UE is allowed to access the network.
The PCEF entity according to claim 10, wherein the response message of the update message includes a second PCC rule and a second quota score generated by the PCRF entity based on the subscription information and the first quota fragment. sheet;

The monitoring module is further configured to: when the transceiver module receives the response message of the update message, according to The second PCC rule and the second quota fragment perform quota monitoring on the UE access network.
A PCEF entity, applied to a PCC architecture, comprising:

a processor, configured to perform quota monitoring on the UE access network based on the received first PCC rule and the first quota fragment after establishing an IP-CAN session for the UE;

a transceiver, configured to send, to the PCRF entity, an update message, where the remaining quota of the first quota fragment is less than or equal to a preset quota threshold, where the update message is used to indicate the remaining of the first quota fragment The quota is less than or equal to the preset quota threshold;

The processor is further configured to determine whether the first quota fragment is a preset type of quota fragment;

The transceiver is further configured to receive a response message of the update message;

The processor is further configured to: when the first quota fragment is a quota fragment of the preset type, and the transceiver does not receive the response message of the update message, reject the UE Access the network.
A PCRF entity is applied to a PCC architecture and includes:

a transceiver module, configured to receive a CCR initial message sent by a PCEF entity, where the CCR initial message is used to request to establish an IP-CAN session for the UE;

a generating module, configured to generate a first PCC rule and a first quota fragment based on the subscription information of the UE, in response to the CCR initial message;

a determining module, configured to determine whether the first quota fragment is a preset type of quota fragment;

The generating module is further configured to: when the determining module determines that the first quota fragment is the quota type of the preset type, generate indication information, where the indication information is used to indicate the first A quota fragment is a quota of the preset type quota;

The transceiver module is further configured to return a CCA initial message to the PCEF entity, where the CCA initial message includes the first PCC rule, the first quota fragment, and indication information.
The PCRF entity according to claim 13, wherein the preset type of quota fragment is the last quota fragment of the UE.
The PCRF entity according to claim 13 or 14, wherein the specific manner in which the transceiver module returns a CCA initial message to the PCEF entity is:

Returning, by using the monitoring information in the Gx interface, the CCA initial message to the PCEF entity, so that the PCEF entity monitors the remaining quota of the first quota fragment based on the first PCC rule and the first quota fragment The update message is sent to the PCRF entity to indicate that the remaining quota of the first quota fragment is less than or equal to the preset quota threshold, and the response of the update message is not received. In the case of a message, the UE is denied access to the network.
A PCRF entity is applied to a PCC architecture and includes:

a transceiver, configured to receive a CCR initial message sent by a PCEF entity, where the CCR initial message is used to request to establish an IP-CAN session for the UE;

a processor, configured to generate a first PCC rule and a first message based on the subscription information of the UE in response to the CCR initial message The quota is fragmented, and it is determined whether the first quota fragment is a preset type of quota fragment;

The processor is further configured to: when the first quota fragment is the quota type of the preset type, generate indication information, where the indication information is used to indicate that the first quota fragment is the Preset type quota fragmentation;

The transceiver is further configured to return a CCA initial message to the PCEF entity, where the CCA initial message includes the first PCC rule, the first quota fragment, and indication information.
A policy control system for use in a PCC architecture, characterized in that the system comprises a PCEF entity according to any of claims 8-11 and a PCRF entity according to any of claims 13-15.